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Sigurdur S Stephensen, Katarina Steding-Ehrenborg, Ulf Thilén, Johan Holm, Peter Hochbergs, Hakan Arheden, Marcus Carlsson
BACKGROUND: The purpose of this study was to determine the effect of stress on left-to-right shunting in patients with atrial septal defect (ASD) and to investigate if the degree of shunting, cardiac output (CO), and right ventricular (RV) volumes are related to exercise capacity. METHODS: Twenty-six patients with a secundum ASD and 16 healthy volunteers were studied with rest/stress cardiac magnetic resonance using 20 µg/kg/min dobutamine and 0.25-0.75 mg atropine to quantify CO, pulmonary to systemic flow ratio (QP/QS), and left ventricular (LV) and RV volumes...
September 1, 2016: European Heart Journal Cardiovascular Imaging
Evandro Fornias Sperandio, Rodolfo Leite Arantes, Rodrigo Pereira da Silva, Agatha Caveda Matheus, Vinícius Tonon Lauria, Mayara Silveira Bianchim, Marcello Romiti, Antônio Ricardo de Toledo Gagliardi, Victor Zuniga Dourado
CONTEXT AND OBJECTIVES: Accelerometry provides objective measurement of physical activity levels, but is unfeasible in clinical practice. Thus, we aimed to identify physical fitness tests capable of predicting physical inactivity among adults. DESIGN AND SETTING: Diagnostic test study developed at a university laboratory and a diagnostic clinic. METHODS: 188 asymptomatic subjects underwent assessment of physical activity levels through accelerometry, ergospirometry on treadmill, body composition from bioelectrical impedance, isokinetic muscle function, postural balance on a force platform and six-minute walk test...
January 2016: São Paulo Medical Journal, Revista Paulista de Medicina
Ramona Cabiddu, Camila B F Pantoni, Renata G Mendes, Renata Trimer, Aparecida M Catai, Audrey Borghi-Silva
BACKGROUND: Portable respiratory inductive plethysmography (RIP) systems have been validated for ventilatory assessment during resting conditions and during incremental treadmill exercise. However, in clinical settings and during field-based exercise, intensity is usually constant and submaximal. A demonstration of the ability of RIP to detect respiratory measurements accurately during constant intensity conditions would promote and validate the routine use of portable RIP devices as an alternative to ergospirometry (ES), the current gold standard technique for ventilatory measures...
March 15, 2016: Brazilian Journal of Physical Therapy
Boguslaw Mazurek, Leslaw Szydlowski, Magdalena Mazurek, Grazyna Markiewicz-Loskot, Jacek Pajak, Aleksandra Morka
Children who underwent surgery for complex congenital heart defects present worse exercise capacity than their healthy peers. In adults and adolescents, heart failure is assessed on the basis of clinical symptoms using the New York Heart Association (NYHA) score, while in an infant Ross scale; heart failure can also be evaluated by other parameters. The purpose of this study was to compare the degree of exercise tolerance in children after surgery for complex heart defects, assessed by the ratio of maximum oxygen uptake (VO2max) and the brain natriuretic peptide (N-terminal fragment of the prohormone brain-type natriuretic peptide [NT-proBNP]) concentration...
February 2016: Medicine (Baltimore)
Marinei Lopes Pedralli, Gustavo Waclawovsky, Augusto Camacho, Melissa Medeiros Markoski, Iran Castro, Alexandre Machado Lehnen
BACKGROUND: Endothelial dysfunction is a hallmark of diabetes mellitus and systemic arterial hypertension (SAH) and an early maker for atherosclerosis. Aerobic exercise training is known to enhance endothelial function, but little is understood about the effects of resistance or combined exercise training on endothelial function. The aim of this study is to investigate the effect of a 12-week aerobic (AT), resistance (RT), or combined (aerobic and resistance, CT) training program on endothelial function and assess associated effects on blood pressure in individuals with SAH...
2016: Trials
Maciej Jędrzejko, Krzysztof Nowosielski, Ryszard Poręba, Izabela Ulman-Włodarz, Rafał Bobiński
OBJECTIVES: To evaluate physical efficiency and activity energy expenditure (AEE) in term pregnancy females during cardiopulmonary exercise tests with a supine cycle ergometer. MATERIAL AND METHODS: The study comprised 22 healthy full-term pregnancy women with uncomplicated pregnancies hospitalized in the Department of Gynecology and Obstetrics, Specialist Teaching Hospital in Tychy, Poland. All subjects underwent cardiopulmonary exercise tests (CPET) on a supine cycle ergometer...
December 2016: Journal of Maternal-fetal & Neonatal Medicine
Fábio Jennings, Hilda Alcântara Oliveira, Marcelo Cardoso de Souza, Vaneska da Graça Cruz, Jamil Natour
OBJECTIVE: To evaluate the effects of aerobic exercise in patients with ankylosing spondylitis (AS). METHODS: Seventy patients classified with AS by the modified New York criteria were included. The patients were randomly assigned into 2 groups. The intervention group (IG) performed 50 min of walking followed by stretching exercises 3 times a week for 12 weeks. The control group (CG) performed only stretching exercises. The outcome measurements were the Bath indexes [Bath AS Functional Index (BASFI), Bath AS Disease Activity Index (BASDAI), and Bath AS Metrology Index (BASMI)], Health Assessment Questionnaire for the Spondyloarthropathies (HAQ-S), AS Disease Activity Score (ASDAS), the 6-min walk test (6MWT), chest expansion, and the Medical Outcomes Study Short Form-36...
December 2015: Journal of Rheumatology
Sabine Häussermann, Anja Schulze, Ira M Katz, Andrew R Martin, Christiane Herpich, Theresa Hunger, Joëlle Texereau
BACKGROUND: Helium/oxygen therapies have been studied as a means to reduce the symptoms of obstructive lung diseases with inconclusive results in clinical trials. To better understand this variability in results, an exploratory physiological study was performed comparing the effects of helium/oxygen mixture (78%/22%) to that of medical air. METHODS: The gas mixtures were administered to healthy, asthmatic, and chronic obstructive pulmonary disease (COPD) participants, both moderate and severe (6 participants in each disease group, a total of 30); at rest and during submaximal cycling exercise with equivalent work rates...
2015: International Journal of Chronic Obstructive Pulmonary Disease
D C Costa, G L de Santi, J C Crescêncio, L P Seabra, E E V Carvalho, V Papa, F Marques, L Gallo Junior, A Schmidt
This study aimed to analyze the agreement between measurements of unloaded oxygen uptake and peak oxygen uptake based on equations proposed by Wasserman and on real measurements directly obtained with the ergospirometry system. We performed an incremental cardiopulmonary exercise test (CPET), which was applied to two groups of sedentary male subjects: one apparently healthy group (HG, n=12) and the other had stable coronary artery disease (n=16). The mean age in the HG was 47±4 years and that in the coronary artery disease group (CG) was 57±8 years...
December 2015: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
Astrid Strandheim, Hilde Halland, Sahrai Saeed, Dana Cramariuc, Trude Hetland, Mai Tone Lønnebakken, Eva Gerdts
OBJECTIVES: To study the relationship between obesity and heart rate (HR) in women and men. DESIGN: We studied 241 overweight and obese subjects without known heart disease. All subjects underwent ergospirometry during maximal exercise testing on treadmill and recording of body composition, electrocardiogram and clinic and ambulatory blood pressure. RESULTS: Women (n = 132) were slightly older and had higher fat mass, but lower weight, blood pressure and prevalence of metabolic syndrome (MetS) than men (n = 109) (all p < 0...
2015: Scandinavian Cardiovascular Journal: SCJ
Eduardo Lima Garcia, Márcio Garcia Menezes, Charles de Moraes Stefani, Luiz Cláudio Danzmann, Marco Antonio Rodrigues Torres
BACKGROUND: Heart failure with preserved ejection fraction is a syndrome characterized by changes in diastolic function; it is more prevalent among the elderly, women, and individuals with systemic hypertension (SH) and diabetes mellitus. However, in its early stages, there are no signs of congestion and it is identified in tests by adverse remodeling, decreased exercise capacity and diastolic dysfunction. OBJECTIVE: To compare doppler, echocardiographic (Echo), and cardiopulmonary exercise test (CPET) variables - ergospirometry variables - between two population samples: one of individuals in the early stage of this syndrome, and the other of healthy individuals...
September 2015: Arquivos Brasileiros de Cardiologia
Marek A Deja, Aleksandra Żak, Marcin Malinowski, Piotr Pysz, Ewa Gaszewska-Żurek, Maciej Turski, Piotr Janusiewicz, Krystian Wita, Jerzy Chudek
BACKGROUND: Restrictive mitral annuloplasty is the preferred method of treating secondary mitral regurgitation. The use of small annuloplasty rings to reduce the high recurrence rates may result in mitral stenosis. METHODS: Thirty-six patients who underwent restrictive mitral annuloplasty with Carpentier-Edwards classic 26 size ring underwent exercise echocardiography and ergospirometry. Resting catecholamines and N-terminal pro brain natriuretic peptide (NT-proBNP) levels were measured...
October 2015: Annals of Thoracic Surgery
Knut Hagen, Ulrik Wisløff, Øyvind Ellingsen, Lars Jacob Stovner, Mattias Linde
BACKGROUND: Evidence on the association between headache and physical fitness is conflicting. The aim of this population-based study was to examine the relationship between peak oxygen uptake (VO2peak) and headache, including migraine and tension-type headache (TTH). METHODS: In the third Nord-Trøndelag Health study (HUNT3), VO2peak was measured by ergospirometry in a sample of 4631 healthy adult participants. Of these, 3899 (54% women) also answered headache questions...
April 2016: Cephalalgia: An International Journal of Headache
Dominique Hansen, Nele Jacobs, Herbert Thijs, Paul Dendale, Neree Claes
Healthcare professionals with limited access to ergospirometry remain in need of valid and simple submaximal exercise tests to predict maximal oxygen uptake (VO2max ). Despite previous validation studies concerning fixed-rate step tests, accurate equations for the estimation of VO2max remain to be formulated from a large sample of healthy adults between age 18-75 years (n > 100). The aim of this study was to develop a valid equation to estimate VO2max from a fixed-rate step test in a larger sample of healthy adults...
September 2016: Clinical Physiology and Functional Imaging
Jonathan Moran, Alexandra Murphy, David Murphy, Andy Austin, Danielle Moran, Caitriona Cronin, Emer Guinan, Juliette Hussey
Crutches are commonly prescribed to patients with lower limb dysfunction during rehabilitation to assist with mobility. The aim of this study was to determine the energy expenditure for non-weight bearing crutch walking on level ground and ascending stairs at a self selected speed in a healthy adult population. Thirty-one healthy male and female adults (mean±SD: age 21.6±1.2 years; height 170.8±10.8 cm; weight 70.8±11.4 kg) mobilised non-weight bearing with elbow crutches along a 30 m corridor and (with one crutch) up a flight of 13 stairs...
June 2015: Gait & Posture
Jon R Christiansen, Adriani Kanellopoulos, May B Lund, Richard Massey, Håvard Dalen, Cecilie E Kiserud, Ellen Ruud, Svend Aakhus
BACKGROUND: Survivors of childhood acute lymphoblastic leukemia (ALL) are at risk for late cardiotoxic effects of cancer treatment, but conflicting evidence exists on the effects of anthracyclines on left ventricular (LV) diastolic function and exercise capacity. PROCEDURE: We performed a cross-sectional study with comprehensive echocardiography in 138 adult survivors of childhood ALL, median 23.4 years after diagnosis. Pulsed tissue Doppler measurements of early diastolic mitral annular velocities (e') were used for the assessment of diastolic function, and compared to 138 matched controls...
August 2015: Pediatric Blood & Cancer
M W Hoppe, B Sperlich, C Baumgart, M Janssen, J Freiwald
This study aimed to investigate the reliability of 1) the key parameters of cycling ergospirometry (maximum power output [Pmax] and oxygen uptake [V̇O2peak], ventilatory thresholds 1 [VT 1] and 2 [VT 2], and cycling efficiency [CE] and gross efficiency [GE]), 2) the commonly used parameters to quantify exhaustion (maximum heart rate [HFmax], respiratory quotient [RQmax], blood lactate concentration [BLAmax], and ratings of perceived exhaustion [RPEmax]), and 3) the kinetics of exercise induced gas exchange measurements (oxygen uptake [V̇O2], carbon dioxide output [V̇CO2], and minute ventilation [V̇E]) using the PowerCube-Ergo metabolic system in consideration of international statistical recommendations...
September 2015: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
Jeferson M Vianna, Francisco Z Werneck, Emerson F Coelho, Vinicius O Damasceno, Victor M Reis
Oxygen uptake (VO2) and heart rate (HR) kinetics after exercise are important indicators of fitness and cardiovascular health. However, these variables have been little investigated in resistance exercise (RE). The current study compared post-exercise kinetics of VO2 and the HR among different types of REs. The study included 14 males (age: 26.5±5.4 years, body mass: 80.1±11.4 kg, body height: 1.77±0.07 m, fat content: 11.3±4.6%) with RE experience. Dynamic muscle strength was measured using one repetition maximum (1RM) with regard to the half-squat, bench press, pull-down, and triceps pushdown exercises...
September 29, 2014: Journal of Human Kinetics
Andresa Thier de Borba, Renan Trevisan Jost, Ricardo Gass, Fúlvio Borges Nedel, Dannuey Machado Cardoso, Hildegard Hedwig Pohl, Miriam Beatris Reckziegel, Valeriano Antonio Corbellini, Dulciane Nunes Paiva
BACKGROUND: The aim of this study was to analyze the influence of active and passive smoking on cardiorespiratory responses in asymptomatic adults during a sub-maximal-exertion incremental test. METHODS: The participants (n = 43) were divided into three different groups: active smokers (n = 14; aged 36.5 ± 8 years), passive smokers (n = 14; aged 34.6 ± 11.9 years) and non-smokers (n = 15; aged 30 ± 8.1 years). They all answered the Test for Nicotine Dependence and underwent anthropometric evaluation, spirometry and ergospirometry according to the Bruce Treadmill Protocol...
2014: Multidisciplinary Respiratory Medicine
Frank Beutner, Romy Ubrich, Silke Zachariae, Christoph Engel, Marcus Sandri, Andrej Teren, Stephan Gielen
BACKGROUND: Physical exercise capacity has been shown to predict cardiovascular disease incidence and is increasingly measured in epidemiological studies. However, direct measurement of peak oxygen uptake is too time consuming in large-scale studies. We therefore investigated whether a brief 3-minute step-test protocol can be used to estimate peak oxygen uptake in these settings. DESIGN AND METHODS: A group of 97 subjects performed the YMCA step test and a maximal treadmill test with continuous measurement of oxygen uptake...
April 2015: European Journal of Preventive Cardiology
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